Answer:
it is a chemical change
Explanation:
it is a chemical change since the lemon juice can not be returned to its original form some part of it had been converted to gas form
FeSO2
Please see attached picture for full solution.
The answer is A, I think.
3,2,0,1/2
1,0,0,1/2
3,2,2,1/2
4,2,1,1/2
2,1,-1,-1/2
THEY ARE VALID